Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java (6529)
Advanced Java (552)
Swing (223)
EJB (402)

Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

SunOne (10)
J2EE (485)
Weblogic (694)
Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

what is meant by Transaction Isolation Levels?

IBM,

2 8418

can anyone explain me the workflow of EJB.I have developed an app. in WSAD using an example that contains CMP and session bean.But i am not able to understand the basic flow between diffrent packages.

1 2490

Explain how data flows from view to db and reverse

Bosch,

1 2105

How to get ip address in jsp login page and how to validate like 127.1.0.1 all should not be greater than 255

Bosch, EF,

1 3490

In jsp custom tags from child tags to how many levels of parent tags you can acess

Bosch,

1 4100

How to work with Chinese login page (internationalization).if he enters user name and password in chinese, how is it converted to English and validate in db? And in reverse it should display welcome message in Chinese,if user is valid

Bosch,

4 9213

What is done after deploying a war file and before client gives a request

Bosch,

2 6201

Is classes folder is compulsory in web-inf/ even though u r deploying ur application with war file?

Bosch, Cognizant,

3 9097

How do u authorize and authenticate without of web.xml

Bosch,

1 5185

How to make a class immutable?

Bosch, TSYS,

15 31305

If we close the browser,when the specific user session is active.Again if we open browse how to retrive it same user??what code i have to da???

TCS,

5 12755

What is a constructor?

4 6259

What is the difference between Abstract Class and Interface

Amdocs,

8 16121

In HashTable I am storing null value..then what is the error it will show

GM General Motors,

2 12357

In web.xml file instead of *.do can i write *.ibm, Specify with example

IBM,

13 23767

Un-Answered Questions { Java J2EE }

What are the contents on web.xml in struts application ?

1058

What is an object in java and how is it created?

1128

What is java string pool?

1076

Can we return resultset in java?

988

How to sort array in descending order in java?

987

What is a constructor overloading in java?

1122

Explain public static void main(string args[]) in java.

1064

What is latest hibernate version?

486

What are the differences between heap and stack memory in java?

1128

What do you know about validation plugin ?

1024

Find Best Job Vacancies across the world on Jooble!

136

How to create a base64 decoder in java8?

1131

explain different ways of using thread? : Java thread

1079

Write a program to print count of empty strings in java 8?

1080

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2659

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